I am so sorry to hear about Gus. I understand what you are going through. In January our 5 year, Sabrina, couldn't breath very well. After ultra sounds and xrays the vet found a mass on her lung. We too decided not to do anything because I did not want to put her through it and there are no guarantees. As long as she is not suffering. She takes Predisone every day, I call it her magic pill. The vet doesn't know how long she has, so each day is precious. Sabrina is happy and we love her every day more than the day before. So just love on your baby!
Sabrina's mom
Sabrina 5 years old fawn
Pandora 11 years old fawn, mother to Sabrina